I second the recommendation on the Hornady and I also suggest the Berger 135 elite hunter. All are good for whitetail and are usually very accurate. I think you made a good choose for a close to medium range scope. You can certainly get the gun on a very close target quicker with the low...
I often hunt all day, arriving on stand an hour before sunup and stay till 30 minutes after sundown, hunting every legal minute. I find it relaxing and I don't get bored. Most of my hunting is from treestands, very comfortable treestands. I only come down if I've got a deer down or if it's so...